<template>
  <div class="users">
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row type="flex" justify="space-between">
        <el-col :span="8">
          <el-input
            placeholder="请输入查询用户姓名"
            v-model="queryInfo.query"
            clearable
            @clear="clearList"
            @keyup.enter.native="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="3">
          <el-button
            type="primary"
            @click="addDialogVisible = true"
            class="addUser"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <!-- 状态区域 -->
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              active-color="#409eff"
              @change="userStateChange(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <!-- 操作区域 -->
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            >
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="40%"
      :append-to-body="true"
      @close="addDialogClosed"
      :close-on-click-modal="false"
    >
      <!-- 内容主体区域 -->
      <span>
        <el-form
          :model="addForm"
          :rules="addFormRules"
          ref="addFormRef"
          label-width="70px"
          class="dialogForm"
        >
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
      </span>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="addUser">确定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisable"
      width="50%"
      :append-to-body="true"
      :close-on-click-modal="false"
      @close="editDialogClosed"
    >
      <span>
        <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="70px"
          class="dialogForm"
        >
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机号" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
      </span>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisable = false">取消</el-button>
        <el-button type="primary" @click="editUserInfo">确定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      :append-to-body="true"
      :close-on-click-modal="false"
      width="50%"
      @close='setRoleDialogClosed'
    >
      <div>
        <p>当前用户: {{ userInfo.username }}</p>
        <p>当前角色: {{ userInfo.role_name }}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
      // 验证邮箱的正则表达式
      if (regEmail.test(value)) {
        // 合法邮箱
        return cb();
      }
      cb(new Error("请输入合法邮箱"));
    };
    var checkMobile = (rule, value, cb) => {
      const regMoblie = /^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\d{8}$/;
      if (regMoblie.test(value)) {
        return cb();
      }
      cb(new Error("请输入合法手机号"));
    };
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: "",
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 10,
      },
      // 所有用户列表
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 控制修改用户对话框的显示与隐藏
      editDialogVisable: false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 7,
            message: "长度在 3 到 7 个字符",
            trigger: "change",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 3,
            max: 15,
            message: "长度在 3 到 15 个字符",
            trigger: "change",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入电话", trigger: "blur" },
          { validator: checkMobile, trigger: "change" },
        ],
      },
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入电话", trigger: "blur" },
          { validator: checkMobile, trigger: "change" },
        ],
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色ID值
      selectedRoleId: "",
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    // 根据id删除用户
    removeUserById: async function (id) {
      this.$confirm("此操作将永久删除该用户, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete("users/" + id);
          if (res.meta.status != 200) {
            return this.$message.error("删除用户失败");
          }
          this.$message.success("删除用户成功");
          this.getUserList();
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    // 修改用户信息并提交
    editUserInfo: function () {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error("校验未通过");
        // 发起修改用户信息的网络请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        }

        // 关闭对话框
        this.editDialogVisable = false;
        // 刷新数据列表
        this.getUserList();
        // 提示修改成功
        this.$message.success("更新用户信息成功");
      });
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed: function () {
      this.$refs.editFormRef.resetFields();
    },
    // 展示编辑用户的对话框
    showEditDialog: async function (id) {
      // console.log(id);
      this.editDialogVisable = true;
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status != 200) {
        return this.$message.error("查询用户失败");
      }
      this.editForm = res.data;
      console.log(this.editForm);
    },
    // 添加用户操作
    addUser: function () {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status != 201) {
          this.$message.error("添加用户失败");
          return;
        }
        this.$message.success("添加用户成功");
        // 隐藏添加用户的对话框
        this.addDialogVisible = false;
        // 重新获取用户列表数据
        this.getUserList();
      });
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed: function () {
      this.$refs.addFormRef.resetFields();
    },
    // 点击输入框的还原按钮时，还原用户列表先前状态
    clearList: function () {
      this.queryInfo.pagenum = 1;
      this.getUserList();
    },
    // 获取总用户列表数据
    getUserList: async function () {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status != 200)
        return this.$message.error("获取用户列表失败!");
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    // 监听pageSize的改变
    handleSizeChange: function (newSize) {
      // console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听 页码值 改变的事件
    handleCurrentChange: function (newPage) {
      // console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听用户状态开关的改变
    userStateChange: async function (userinfo) {
      console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status != 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新用户状态失败");
      } else {
        this.$message.success("更新用户状态成功");
      }
    },
    // 展示分配角色的对话框
    setRole: async function (userInfo) {
      this.userInfo = userInfo;

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败!");
      }
      this.rolesList = res.data;
      // console.log(this.rolesList);
      this.setRoleDialogVisible = true;
    },
    // 点击按钮分配角色
    saveRoleInfo: async function () {
      if (!this.selectedRoleId)
        return this.$message.error("请选择用户要分配的角色");

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId,
      });
      if (res.meta.status !== 200) {
        console.log(res);
        return this.$message.error("更新角色失败! 错误信息： "+ res.meta.msg);
      }
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed: function () {
      this.selectedRoleId = ''
      this.userInfo = ''
    }
  },
};
</script>

<style lang="less" scoped>
.users {
  margin: 0 auto;
  width: 75%;
}
.dialogForm {
  width: 80%;
  margin: 0 auto;
}
.el-row {
  margin: 0 !important;
}
.addUser {
  margin-left: 6px !important;
}
</style>